Estimate a 10% tip on a bill of $168.48 by first rounding the bill amount to the nearest ten dollars.

$17

Step-by-step explanation:

168.48 rounded to nearest ten

is $170.00  because the number behind the tens place is larger than 5 (8). Therefore you round up

170 x 0.10 is 17

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (: